KT 80-Volt Max Review

Brushless Lithium Ion 21-Inch Self-Propelled Cordless Electric Lawn Mower


Final Score

4.4 / 5 from 37 users

KT 80-Volt Max | Tools Official
KT 80-Volt Max | Tools Official
KT 80-Volt Max | Tools Official


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We spent 6.8 hours reading reviews from customers and experts. In summary, here's what users think:

11 reasons to buy

  • Multiple reviews highlight the powerful electric motor, which gives the KT 80-Volt Max enough strength to handle tough mowing tasks and thick grass. (6 reviews)

  • The self-propelled feature is noted as a major pro, making it easier to operate the mower. (6 reviews)

    • “self-propelled function works great”

    • “The unit costs a hundred dollars more than the next model, probably for the self propelled feature. It’s worth it!”

    • “using the self propelled mode”

    • “The self-propel feature can run without the blades running.”

    • “Self propel system switch sticks often and will not shut off.”

    • “The self-propel feature. I bought this feature more for my significant other, but the mower seems lighter weight than the Troy-bilt/Honda mower it replaced, so it actually feels like it pushes easier”

  • Several users say the battery life is great, letting them mow for a long time without having to recharge often. (5 reviews)

    • “Really long lasting battery”

    • “The charge in the battery is beyond impressive, I am tired of mowing before the charge runs out.”

    • “Runtime is very good”

    • “I still had between half and three quarters battery life indication after each use”

    • “It takes about two full batteries to mow my lawn when it is super long. If you keep up with your mowing should only take one charge.”

  • The mower's feature that automatically increases power when it hits heavy or thick grass is seen as a plus. (3 reviews)

    • “When ever it hits anything heavy, it increases powers automatically to power through it, then drops back to normal.”

    • “When the mower detects that the blade speed starts to slow down, it'll kick in to high blade speed.”

    • “Performs great when mowing thick brushy areas”

  • Several reviews appreciate the fact that the mower does not require oil or gas. This reduces maintenance efforts compared to gas-powered mowers. (3 reviews)

    • “Oh, did I mention, no oil, gas and POLOUTION including Noise.”

    • “I don't have to deal with the maintenance that an oil and gas mower needs.”

    • “No gas can, no oil level.”

  • The ability to adjust the speed of the self-propulsion lets users customize it to their preference and comfort. (3 reviews)

    • “The workaround is to play with the self propulsion speed (faster or slower... doesn't matter which. Just do your own preference). Keep adjusting it in very small increments until the mower stops randomly shutting off on you while you're using it.”

    • “Slow speed was like walking extremely slow. The next speed was like an extremely fast walk.”

    • “The speed control is a breeze to tweak to your desire”

  • The blade width is praised for covering more ground, reducing mowing time. (2 reviews)

    • “Also, the blade is not short, which helps to reduce moving time.”

    • “Cutting characteristics are generally good, but a little quirky in that the cutting width is just inside the inner wheels (actual blade width from tip to tip is 19.75")”

  • The ease of starting the mower with a push of a button is often mentioned, contrasting with the hassle of starting traditional gas mowers. (2 reviews)

    • “This mower instantly starts and does not stop until I want it too.”

    • “Charge the battery, check the blade, and mow !”

  • There is less pollution, and the mower is quieter. This is great for users who want to mow without making a lot of noise. (2 reviews)

    • “Oh, did I mention, no oil, gas and POLOUTION including Noise.”

    • “Wonderful, fume free, quiet mowing and at any time of day or night”

  • Users appreciate the quick charging feature of the battery, reducing downtime between uses. (1 review)

  • On high blade speeds, the mower exhibits decent vacuum power, which is useful for standing up grass blades for an even cut. (1 review)

4 reasons not to buy

  • The grass catcher fills up fast, which can be a hassle for people with big lawns or tall grass because you have to empty it often. (3 reviews)

    • “the bag fills sort of quickly, but probably it is because of my long grass in the yard”

    • “The mower will cut off four to five times to fill one bag with grass clippings.”

    • “mulching does tend to load up the deck and make for a more arduous cleanup task afterward as the deck will hold a large amount of pureed cuttings”

  • At lower blade speeds, the mower doesn't pull up the grass well, especially if you have a type of grass with wide blades. This can make the cut look uneven. (2 reviews)

    • “Horrible vacuum power in low blade speed”

    • “I have found out the front opening of this lawnmower is too low that pressed weeds under blade level, which left lots of weeds survived after cutting.”

  • Although this electric mower is pretty strong for its kind, it's not as powerful as gas mowers. This might make it less effective in very thick grass or on big lawns. (2 reviews)

    • “It definitely doesn't have the power of a gas mower but will definitely get the job done.”

    • “Manufactory probably needs to add teeth on blade with reaping hook to make cutting perfect flat. I have an old gas lawnmower it has teeth and reaping hook on blade it cuts much better than this.”

  • The self-propel feature takes about 5 seconds to disengage, which can make quick back-and-forth mowing less convenient. (2 reviews)

    • “The propel features takes a about 5 seconds to disengage so going back and fourth quickly is not easy to do unless you just push it yourself during those times.”

    • “One thing that is a bit weird about the self-propel, is the foot or two the mower must move AFTER the on/off propel switch is released”

Bottom Line

The KT 80-Volt Max is a robust electric mower with a powerful motor that tackles tough and thick grass with ease. It's self-propelled, making it user-friendly, and boasts long battery life for extended mowing sessions. The smart power boost in thick grass, hassle-free push-button start, and no need for oil or gas are a big plus. It's also quieter and less polluting. However, it may lag behind gas mowers in extreme conditions, and the self-propel can be slow to disengage. The grass catcher also fills quickly, so frequent emptying may be needed.


Cutting Width (in)21 inch
FeaturesElectric Start, Mulching, Bagging, Side Discharge
Max Cutting Height3-3/4"
Min Cutting Height1-3/8"
Power SourceBattery
CategorySelf Propelled Mowers
Warranty5 Years
Weight95 lbs
Additional Info6.0 AH Battery And Charger Included, Auto-Sensing technology, Collapsible Handle

Video Reviews

Tips for KT 80-Volt Max

  • Use 303 Protectant all around it and Fluid Film spray on the underside as well as any exposed metal to prevent corrosion and sticking.
  • To keep it in the best condition, clean the mower after each use.

Special Features

  • Extended 60-Minute Runtime with 6.0 Ah Battery: You can mow for a full hour without stopping to recharge, thanks to the big battery that comes with it.
  • Self-Propelled with Variable Speed: The mower moves on its own, so you don't have to push hard. You can also control how fast it goes to match your walking speed.
  • Space-Saving Vertical Storage: The handle folds down so you can store the mower upright, saving you space in your shed or garage.
  • Auto-Sensing Technology: The mower figures out when the grass is thick and adjusts its power on its own, so you don't have to work as hard or mess with any settings.
  • Single-Lever Height Adjustment: It's super easy to change the cutting height with just one lever, so you can get your grass the exact length you want.
  • Powerful Brushless Motor: This type of motor is stronger and lasts longer than older kinds. It'll give you more cutting power and won't wear out as fast.
  • 3-in-1 Mowing Options: You can choose to collect the grass clippings in a bag, spread them out as mulch, or shoot them out the side. It's all built into one handy machine.
  • Battery Charge Indicator: There's a display that shows how much battery life you have left, so you'll never be caught off guard by a dead battery.
  • Ready to Use with Battery and Charger Included: Everything you need to get started comes in the box. You won't have to buy a battery or charger separately.


  • Q:

    Does the KT 80-Volt Max come with 2 batteries?

  • A:

    The mower includes one 6 Ah battery.

  • Q:

    Can you use water to clean the mower’s deck and undersides?

  • A:

    It is recommended to use an air compressor when cleaning to avoid getting electronics wet.

  • Q:

    What is the mower’s battery life?

  • A:

    The mower’s battery has an average life of 2000 charge cycles.

  • Q:

    What is the deck made of?

  • A:

    The mower’s deck is made of steel.

  • Q:

    How long does it take to fully charge the batteries?

  • A:

    The battery can fully charge in 30 minutes when using the 80V rapid charger that is included with the lawn mower.

  • Q:

    Is it difficult to pull the mower backwards?

  • A:

    The mower rolls easily backward after turning the self-propelled system off. It is advisable to push the mower forward first after switching off the self-propelled system to disengage the rear wheels.

  • Q:

    Can you mow in wet grass?

  • A:

    The mower can be used in mild dew but is not recommended in wet grass.

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